Vibrating screen for refractory material production

Abstract

The utility model discloses a vibrating screen for refractory material production, which comprises a circular vibrating screen arranged on a support platform, three layers of screen plates are arranged in a circular screen box of the circular vibrating screen, the number of screen meshes of the screen plates is reduced step by step, and a two-in-one feeding and negative pressure dust suction device is arranged at the top of the circular screen box. A first-stage discharging arm, a second-stage discharging arm and a third-stage discharging arm which are communicated with a box chamber are arranged on the side wall of the circular screen box, a feeding port of the first-stage discharging arm is connected with a screen outlet of the topmost layer of screen plate, a discharging port is connected with a first-stage material barrel through a first-stage vibration buffering material pipe, and a feeding port of the second-stage discharging arm is connected with a screen outlet of the middle layer of screen plate. A feeding port of the third-level discharging arm is connected with a screening outlet of the lowest-layer screening plate, a discharging port is connected with a second-level hopper through a second-level vibration buffering material pipe, a feeding port of the third-level discharging arm is connected with a screening outlet of the lowest-layer screening plate, a discharging port is connected with a third-level hopper through a third-level vibration buffering material pipe, and a sealing dustproof cloth sleeve is arranged between the upper edge of a motor box of the circular vibrating screen and the lower edge of a circular screen box. According to the utility model, comprehensive dust prevention can be realized, vibration rigid transmission overflow is avoided, and the service life of equipment is prolonged.

Description

Technical Field

[0001] The utility model relates to the field of refractory material vibrating screening equipment, in particular to a vibrating screen for refractory material production. Background Art

[0002] Refractory materials are a class of materials that maintain their stable structure and performance in high-temperature environments. They possess excellent high-temperature resistance and thermal shock resistance, and can withstand extreme conditions such as high temperatures, thermal shock, and chemical attack. Refractory materials are widely used in the metallurgy, chemical industry, construction, and energy sectors, including the manufacture of refractory furnaces, refractory linings, and refractory insulation materials. The production of refractory materials primarily involves pulverizing and grinding the raw materials, then mixing them in varying proportions, stirring the resulting mixture uniformly using a mixing device, and finally packaging the resulting product into bags. Before mixing, the pulverized raw materials must be screened to achieve uniform particle size and ensure the quality of the refractory material. Existing screening devices often utilize vibrating screens, which utilize the vibrations generated by a motor in conjunction with a screen to screen the raw materials. However, existing vibrating screens used in refractory production are mostly open-top structures. The vibrating screening process generates dust that drifts around, polluting the surrounding environment, not only failing to meet environmental standards, but also posing a health risk to nearby workers. In order to solve this dust problem, there are some refractory material screening equipment in the prior art that use dust covers to remove dust, such as the utility model patent "Refractory Powder Raw Material Iron Removal Screening Device" with authorization announcement number CN 220738542 U. A dust cover is set on the linear vibrating screen to prevent dust from overflowing, and the dust is removed by a dust extraction pipe connected thereto. The dust removal design is not thorough, and some dust overflow cannot be avoided at the feeding position and the discharging position. Moreover, the feeding channel formed by the feeding port on the dust cover is also a dust overflow port. The dust prevention structure is relatively simple and cannot completely prevent the generation of dust. Utility Model Content

[0003] In order to solve the dust problem existing in refractory material screening equipment in the prior art, the utility model provides a vibrating screen for refractory material production.

[0004] The technical solution adopted by the present invention to achieve the above technical effects is:

[0005] A vibrating screen for refractory material production comprises a circular vibrating screen fixed on a support platform, wherein the circular screen box of the circular vibrating screen is provided with three layers of sieve plates with gradually decreasing mesh sizes, wherein a two-in-one feeding and negative pressure dust suction device is provided at the center of the box top of the circular screen box, the circumferential side wall of the circular screen box is provided with a first-level discharging arm, a second-level discharging arm and a third-level discharging arm which are connected with the box chamber, the feeding port of the first-level discharging arm is connected with the sieve outlet of the uppermost sieve plate, the discharging port is connected to the first-level barrel through a first-level damping material pipe, the feeding port of the second-level discharging arm is connected with the sieve outlet of the middle sieve plate, the discharging port is connected to the second-level hopper through a second-level damping material pipe, the feeding port of the third-level discharging arm is connected with the sieve outlet of the lowermost sieve plate, and the discharging port is connected to the third-level hopper through a third-level damping material pipe, and a sealing dustproof cloth cover is provided between the upper edge of the motor box of the circular vibrating screen and the lower edge of the circular screen box.

[0006] Preferably, in the above-mentioned vibrating screen for refractory material production, the feeding and negative pressure dust suction device includes a vertical pipe, the lower end of the vertical pipe is connected to the top of the circular screen box through a slow-vibration connecting pipe, the upper end of the vertical pipe is connected to a negative pressure interface pipe, the upper end of the negative pressure interface pipe is provided with a negative pressure interface connected to an external negative pressure dust suction equipment, the vertical pipe is connected to a refractory material input interface on the side wall at the section between the slow-vibration connecting pipe and the negative pressure interface pipe, and the refractory material input interface is connected to an external spiral feeding conveyor.

[0007] Preferably, in the above-mentioned vibrating screen for refractory material production, the negative pressure interface pipe is connected to a fixing seat for maintaining the stability of the entire feeding and negative pressure dust collection device, and the fixing seat is fixedly connected to the external suspension beam.

[0008] Preferably, in the above-mentioned vibrating screen for refractory material production, an electric shut-off valve for controllably connecting the standpipe with the negative pressure interface pipe is provided at the upper end of the standpipe.

[0009] Preferably, in the above-mentioned vibrating screen for refractory material production, the first-stage damping material tube, the second-stage damping material tube and the third-stage damping material tube are all flexible thick-film plastic sleeves with a damping effect.

[0010] Preferably, in the above-mentioned vibrating screen for refractory material production, the bottoms of the secondary hopper and the tertiary hopper are both provided with a discharge interface for connecting to an external screw conveyor.

[0011] Preferably, in the above-mentioned vibrating screen for refractory material production, a barrel bracket for supporting and fixing the primary barrel is provided on one side of the bracket platform, and the lower end of the primary vibration damping tube is detachably connected to the primary barrel.

[0012] Preferably, in the above-mentioned vibrating screen for refractory material production, grounding legs are respectively provided on the peripheral sides of the secondary hopper and the tertiary hopper.

[0013] The advantages and positive effects of this utility model are as follows: the vibrating screen for refractory material production is equipped with a two-in-one feeding and negative pressure dust collection device on the top of the circular screen box, so that material input and negative pressure dust removal during the vibrating screening process can be completed through a single connection port, which is convenient for retrofitting existing circular vibrating screens. The corresponding discharge arm and slow vibration material pipe can be used to screen and output raw materials of three particle size ranges separately. The slow vibration of the slow vibration material pipe can also prevent vibration output, preventing the vibration generated by the circular vibrating screen from being rigidly transmitted to the barrel and hopper during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional diagram of the utility model;

[0015] Figure 2 A side view of the present invention from one perspective;

[0016] Figure 3 A side view of the present invention from one perspective;

[0017] Figure 4 It is a three-dimensional diagram of the circular vibrating screen described in the present invention. DETAILED DESCRIPTION

[0018] In order to further understand the present invention, the present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0019] In the description of this utility model, it should be noted that the terms "vertical," "upper," "lower," and "horizontal," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0020] It should also be noted that, in the description of the present invention, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections, direct connections, connections through an intermediate medium, or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0021] In order to further understand the content, features and effects of the present invention, the following embodiments are given to explain in detail:

[0022] See Figures 1 to 4 As shown in the figure, an embodiment of the present invention proposes a vibrating screen for refractory material production, which includes a circular vibrating screen 2 fixed on a support platform 1. The circular vibrating screen 2 includes a circular screen box 21 and a motor box 22, wherein the motor box 22 is provided with a vibration motor for driving the circular screen box 21 to produce vibration screening. The circular screen box 21 is provided with three layers of sieve plates with gradually decreasing screening mesh numbers. As an improvement of the present invention, a two-in-one feeding and negative pressure dust collection device 3 is provided at the center of the top of the circular screen box 21, that is, the feeding and negative pressure dust collection device 3 is connected to the circular screen box 21 through a connecting port. The raw materials of refractory materials are input into the circular screen box 21 through the two-in-one feeding and negative pressure dust suction device 3. During the vibrating screening process, the feeding and negative pressure dust suction device 3 can also realize the negative pressure extraction of dust in the circular screen box 21, that is, the input of materials and the negative pressure dust removal during the vibrating screening process can be completed through one connection port, which is convenient for the modification of the existing circular vibrating screen to make it have the negative pressure dust suction function.

[0023] like Figure 1 and Figure 4As shown, the circumferential side wall of the circular screen box 21 is provided with a first-stage discharging arm 211, a second-stage discharging arm 212, and a third-stage discharging arm 213, which are connected to the box chamber. Among them, the feed port of the first-stage discharging arm 211 is connected to the sieve outlet of the uppermost sieve plate, and the discharge port is connected to the first-stage barrel 7 through the first-stage damping pipe 4; the feed port of the second-stage discharging arm 212 is connected to the sieve outlet of the middle sieve plate, and the discharge port is connected to the second-stage hopper 8 through the second-stage damping pipe 5; the feed port of the third-stage discharging arm 213 is connected to the sieve outlet of the lowermost sieve plate, and the discharge port is connected to the third-stage hopper 9 through the third-stage damping pipe 6. The raw materials output to the first-stage discharging arm 211 through the top sieve plate are large-sized raw materials, which need to be further crushed. The raw materials output to the second-stage discharging arm 212 through the middle sieve plate are medium-sized raw materials, which can be simply reprocessed and crushed. Compared with the large-sized raw materials output by the top sieve plate, the two are suitable for different crushing equipment, so the above-mentioned secondary separation screening is required. The raw materials output to the third-stage discharging arm 213 through the bottom sieve plate are qualified particle size raw materials, which can be directly output and packaged as finished materials. In order to avoid dust overflow from the gap between the circular screen box 21 and the motor box 22, a sealed dustproof cloth cover is provided between the upper edge of the motor box 22 of the circular vibrating screen 2 and the lower edge of the circular screen box 21. The large-sized raw materials output by the first-stage discharging arm 211 fall into the first-stage barrel 7 through the first-stage slow-vibration material pipe 4. The first-stage slow-vibration material pipe 4 can provide a dust-free output space on the one hand, and on the other hand, it can also avoid the vibration rigidity from being transmitted to the first-stage barrel 7. Similarly, the secondary vibration damping pipe 5 and the tertiary vibration damping pipe 6 can both provide a dust-free output space while preventing vibration rigidity from being transmitted to the corresponding secondary hopper 8 and tertiary hopper 9.

[0024] Furthermore, in a preferred embodiment of the present invention, Figure 1 and Figure 2 As shown, the feeding and negative pressure dust collection device 3 includes a vertical pipe 31, the lower end of which is connected to the top of the circular screen box 21 through a slow vibration connecting pipe 32. The slow vibration connecting pipe 32 can prevent the vibration from being transmitted to the entire feeding and negative pressure dust collection device 3. As a preferred embodiment of the present invention, the slow vibration connecting pipe 32 can be a corrugated pipe, a rubber pipe or a thick film plastic sleeve. In order to achieve negative pressure dust collection, as shown in FIG. Figure 1 and Figure 2 As shown, the upper end of the vertical pipe 31 is connected to a negative pressure interface pipe 33, and the upper end of the negative pressure interface pipe 33 is provided with a negative pressure interface 331 connected to an external negative pressure dust collection device. Before work, the external negative pressure dust collection device is sealed and connected to the negative pressure interface pipe 33 through the negative pressure interface 331. During the vibrating screening process, the external negative pressure dust collection device is turned on to generate a certain negative pressure in the internal box chamber space of the circular screen box 21, so that the dust generated during the vibrating screening process is input to the external negative pressure dust collection device through the vertical pipe 31 and the negative pressure interface pipe 33. In order to facilitate the input of refractory raw materials into the circular screen box 21, as shown in FIG. Figure 1 and Figure 2As shown, the vertical pipe 31 is connected to a refractory material input interface 35 on the side wall at the section between the slow vibration connecting pipe 32 and the negative pressure interface pipe 33. The refractory material input interface 35 is connected to an external spiral feeding conveyor.

[0025] Furthermore, in a preferred embodiment of the present invention, Figure 1 and Figure 2 As shown, the negative pressure interface pipe 33 is connected to a fixed base 36 for maintaining the stability of the entire feeding and negative pressure dust collection device 3. This fixed base 36 is fixedly connected to the external cantilever beam. To control the communication between the vertical pipe 31 and the negative pressure interface pipe 33, an electric shut-off valve 34 is installed at the upper end of the vertical pipe 31. When screening clean materials free of dust, the electric shut-off valve 34 can be used to close the upper end of the vertical pipe 31, eliminating the need for the negative pressure interface pipe 33 to be connected to an external negative pressure dust collection device. When screening refractory raw materials, the electric shut-off valve 34 is first kept closed, and the refractory raw materials are fed into the circular screen box 21 through the refractory material input port 35. After the raw materials are fed, the spiral feed conveyor has a sealing effect, so dust generated during the vibrating screening process is prevented from escaping through the refractory material input port 35. While the refractory raw materials are being fed, the electric shut-off valve 34 is opened, and the generated dust is exhausted through the negative pressure interface pipe 33 to the external negative pressure dust collection device.

[0026] Furthermore, in the preferred embodiment of the present invention, the first-stage damping material pipe 4, the second-stage damping material pipe 5 and the third-stage damping material pipe 6 are all flexible thick-film plastic sleeves with a damping effect. Figure 1 and Figure 2 As shown, the bottoms of the secondary hopper 8 and the tertiary hopper 9 are both provided with discharge interfaces for connecting to external screw conveyors. Figure 1 As shown, one side of the support platform 1 is equipped with a barrel bracket 71 for supporting and securing the first-stage barrel 7. The lower end of the first-stage damping pipe 4 is detachably connected to the first-stage barrel 7. Grounding feet are provided around the sides of the second-stage hopper 8 and the third-stage hopper 9. To prevent dust from settling on the bottom of the motor box 22, in a preferred embodiment of the present invention, the bottom of the motor box 22 is open, and the opening is connected to a dust collection bag.

[0027] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited to the above embodiments. The above embodiments and the specification only describe the principles of the utility model. The utility model may have various changes and improvements without departing from the spirit and scope of the utility model. These changes and improvements fall within the scope of the utility model to be protected. The scope of protection required by the utility model is defined by the attached claims and their equivalents.

Claims

1. A vibrating screen for refractory material production, comprising a circular vibrating screen (2) fixed on a support platform (1), wherein a circular screen box (21) of the circular vibrating screen (2) is provided with three layers of sieve plates with gradually decreasing sieve mesh sizes, characterized in that: The center of the top of the circular screen box (21) is provided with a two-in-one feeding and negative pressure dust collection device (3), and the circumferential side wall of the circular screen box (21) is provided with a first-level discharge arm (211), a second-level discharge arm (212) and a third-level discharge arm (213) connected to the box chamber. The feeding port of the first-level discharge arm (211) is connected to the screen outlet of the uppermost screen plate, and the discharge port is connected to the first-level barrel (7) through the first-level slow vibration material pipe (4). The feed port of the secondary discharge arm (212) is connected to the sieve outlet of the middle sieve plate, and the discharge port is connected to the secondary hopper (8) through the secondary damping material pipe (5). The feed port of the tertiary discharge arm (213) is connected to the sieve outlet of the lowest sieve plate, and the discharge port is connected to the tertiary hopper (9) through the tertiary damping material pipe (6). A sealed dustproof cloth cover is provided between the upper edge of the motor box (22) of the circular vibrating screen (2) and the lower edge of the circular sieve box (21).

2. The vibrating screen for refractory material production according to claim 1, characterized in that: The feeding and negative pressure dust collection device (3) comprises a vertical pipe (31), the lower end of the vertical pipe (31) is connected to the top of the circular screen box (21) through a slow vibration connecting pipe (32), the upper end of the vertical pipe (31) is connected to a negative pressure interface pipe (33), the upper end of the negative pressure interface pipe (33) is provided with a negative pressure interface (331) connected to an external negative pressure dust collection device, and the vertical pipe (31) is connected to a refractory material input interface (35) on the side wall at the section between the slow vibration connecting pipe (32) and the negative pressure interface pipe (33), and the refractory material input interface (35) is connected to an external spiral feeding conveyor.

3. The vibrating screen for refractory material production according to claim 2, characterized in that: The negative pressure interface pipe (33) is connected to a fixing seat (36) for maintaining the stability of the entire feeding and negative pressure dust collection device (3), and the fixing seat (36) is fixedly connected to the external suspension beam.

4. The vibrating screen for refractory material production according to claim 2, characterized in that: An electric stop valve (34) for controllably connecting the standpipe (31) and the negative pressure interface pipe (33) is provided at the upper end of the standpipe (31).

5. The vibrating screen for refractory material production according to claim 1, characterized in that: The first-stage vibration-damping material tube (4), the second-stage vibration-damping material tube (5), and the third-stage vibration-damping material tube (6) are all flexible thick-film plastic sleeves with a vibration-damping effect.

6. The vibrating screen for refractory material production according to claim 1, characterized in that: The bottoms of the secondary hopper (8) and the tertiary hopper (9) are both provided with a discharge interface for connecting to an external screw conveyor.

7. The vibrating screen for refractory material production according to claim 1, characterized in that: A barrel bracket (71) for supporting and fixing the first-stage barrel (7) is provided on one side of the bracket platform (1), and the lower end of the first-stage damping material tube (4) is detachably connected to the first-stage barrel (7).

8. The vibrating screen for refractory material production according to claim 1, characterized in that: Grounding legs are respectively provided on the circumference of the secondary hopper (8) and the tertiary hopper (9).

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